167 



1. Phos tardicrescens, spec. nov. Plate x., fig. 12. 



Shell pyramidal, stout, whorls eleven, convex, closely ribbed 

 and lirate ; apex conical of five smooth slightly convex whorls 

 of very slow increase. 



Whorls below those of the apex of very slow increase, the 

 posterior ones narrow, and regularly convex, gradually be- 

 coming more and more depressed behind. Last whorl small 

 and narrow, with a high slightly declining and rounded 

 shoulder defined by a blunt angulation ; base short, rounded, 

 ending in a short, strongly twisted, reverted beak. 



Transverse ribs slightly oblique, low, broadish, elevated at 

 the shoulder of the anterior whorls into ill-defined cuneate 

 tubercles, 14 to a whorl. The spiral ornament cosists of about 

 20 thin threads, unequal and inequidistant with wider inter- 

 spaces ; the intercostal spaces are rudely cancellated. 



Aperture round ; outer lip thin, with about 20 spiral ridges 

 within. 



Length, 21 ; breadth, 11 ; length of aperture and canal, 10. 



Locality. — Lower beds at Muddy Creek (J". Dennant!). 



2. Phos lirc8Costatus, T. Woods. Plate xi., fig. 12. 



Cominella lyrsecostata, T. Woods, Proc. Roy. Soc, Tasm., for 

 1876, p. 108. 



Shell long, narrow, fusiform, closely and narrowly ribbed, 

 conspicuously lirate ; whorls eight, flatly convex ; apex blunt, 

 turbinated of three rounded smooth whorls, the anterior two 

 high, the terminal one small. 



AVhorls below the apex short and convex, of very slow in- 

 crease ; suture deep and margined. Last whorl small, with a 

 longish rounded base, ending in a twisted, slightly reverted 

 beak. 



Transverse ribs narrow, rounded, crenulated, about 16 to a 

 whorl, more conspicuous on the posterior whorls, almost obso- 

 lete on the last whorl. LirsD very prominent, distant, six to 

 ten on the penultimate whorl ; intercostal spaces finely can- 

 cellate. Aperture oval ; outer lip acute, faintly lirate within. 



Length, 19 ; breadth, 7 ; length of aperture and canal, 7. 



Locality. — Table Cape {B. M. JoJinston !) . 



3. Phos cominelloides, spec. nov. Plate iv., fig. 11. 

 Shell elongate-pyramidal ; whorls seven and a half, convex, 

 distantly ribbed and faintly lirate ; apex blunt, conoidally 

 cylindrical, of three and a half smooth whorls. "Whorls below 

 those of the apex narrow at first, flatly convex, increasing in 

 convexity towards the front, with a slight narrow concave 

 depression in front of the suture, defined by a blunt angu- 

 lation. 



